How does the pitch of an approaching siren change because of the Doppler effect? A. It becomes lower. B. It becomes louder. C. It does not change. O D. It becomes higher.

How does the pitch of an approaching siren change because of the Doppler

effect?
A. It becomes lower.
B. It becomes louder.
C. It does not change.
O
D. It becomes higher.

1 Answer

How does the pitch of an approaching siren change because of the Doppler effect? A. It becomes lower. B. It becomes louder. C. It does not change. O D. It becomes higher.

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